Martins, Oliva M.D.Nunes, AlcinaFerreira, Fernanda A.Veloso, Cláudia M.Santos, SóniaCorreia, Alexandra I.Fonseca, Manuel JoséSilva, GorettiRachão, SusanaVieira, Elvira PachecoCarrança, PauloFernandes, Paula Odete2022-04-132022-04-132021Martins, Oliva M. D.; Nunes, Alcina; Ferreira, Fernanda; Veloso, Claúdia; Santos, Sónia; Correia, Alexandra; Fonseca, Manuel; Silva, Goretti; Rachão, Susana; Vieira, Elvira; Carrança, Paulo; Fernandes, Paula O. (2021). Monitoring of outdoor tourism demand. North of Portugal. In ICTR 2021 A Virtual Conference. ACI and Polytechnic Institute of Porto, Portugal (ESHT)http://hdl.handle.net/10198/25378The Herfindahl-Hirschman Index (HHI) was used in order to understand the tourism competitiveness of the different sub-regions that make up the North Region of Portugal. This index is a measure which helps to analyse market concentration and at the same time determines the competitiveness of the market.engOutdoor tourismDigital toolsCompetitiveness of the territoriesNorth Region of PortugalHerfindahl-hirschman indexconference object